Classification
301 - Sociology & anthropology
175
300 - Social sciences
76
900 - History & geography
76
306 - Culture & institutions
55
305 - Social groups
52
320 - Political science
40
304 - Factors affecting social behavior
37
610 - Medicine & health
35
930 - History of ancient world to ca. 499
34
700 - The arts; fine & decorative arts
26
330 - Economics
22
200 - Religion
20
155 - Differential & developmental psychology
19
333 - Economics of land & energy
17
340 - Law
16
100 - Philosophy & psychology
15
400 - Language
15
140 - Specific philosophical schools
14
302 - Social interaction
14
410 - Linguistics
13
576 - Genetics & evolution
13
614 - Incidence & prevention of disease
13
600 - Technology
10
380 - Commerce, communications & transportation
9
590 - Animals (Zoology)
9
363 - Other social problems & services
8
570 - Life sciences; biology
8
000 - Computer science, information & general works
7
362 - Social welfare problems & services
7
370 - Education
7
613 - Personal health & safety
7
398 - Folklore
6
577 - Ecology
6
780 - Music
6
150 - Psychology
5
571 - Physiology & related subjects
5
612 - Human physiology
5
620 - Engineering & allied operations
5
658 - General management
5
800 - Literature & rhetoric
5
910 - Geography & travel
5
174 - Occupational ethics
4
303 - Social processes
4
307 - Communities
4
331 - Labor economics
4
338 - Production
4
344 - Labor, social, education & cultural law
4
501 - Philosophy & theory
4
581 - Specific topics in natural history
4
630 - Agriculture & related technologies
4
more ...